define thenar muscle
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thenar (thē'nar), [TA] This word is a noun, not an adjective. Term applied to any structure in relation with the base of the thumb or its underlying collective components. Synonym(s): thenal See: thenar eminence. thenar. 1. the fleshy part of the hand at the base of the thumb. 2. pertaining to the palm.
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Thenar muscles The thenar musculature consists of four muscles located on the radial side of the palm. Together they form the 'ball' of the thumb known as the thenar eminence. They originate at different carpal bones and distally attach to the thumb.
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Learn Muscle Anatomy: Lateral Rotators Superior and Inferior Gemellus. The superior gemellus and inferior gemellus are long, thin muscles that originate on the ischium and insert on the medial surface of the greater trochanter. Both muscles, in addition to helping rotate the hip joint laterally, help to abduct the flexed thigh.
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What is an Extensor Muscle? An extensor muscle is a muscle that works to extend or straighten a body part, effectively enlarging the angle between body parts.Examples of extensor muscles include the muscles that straighten the elbow or the knee.ll of these muscles are anchored to the bone of the upper arm, the humerus, by a common tendon, known as the common extensor tendon. These muscles serve primarily to extend the wrist and fingers. Ad. The main muscle that works to straighten the arm by extending the elbow joint is the triceps brachii extensor muscle.
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Thenar eminence 1 Abductor pollicis brevis abducts the thumb. This muscle is the most superficial of the thenar group. 2  Flexor pollicis brevis, which lies next to the abductor, will flex the thumb, curling it up in the palm.  Opponens pollicis lies deep to abductor pollicis brevis.
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- The palm contains muscles called thenar muscles. Frequent use of cell phones can cause tendinitis in the thenar muscles. A radial artery is the main blood vessel for the forearm, carrying oxygen-rich blood through the arm, wrist and fingers.
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extensor (eks-ten'sŏr, -sōr), [TA] 1  A muscle the contraction of which causes movement at a joint with the consequence that the limb or body assumes a more straight line, or so that the distance between the parts proximal and distal to the joint is increased or extended; the antagonist of a flexor. See: muscle.
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What is Thenar Eminence? Hypothenar eminence is a condition similar to thenar eminence. Three muscles in the palm of your hand are involved, but they are under the pinkie finger. It affects the motion of the little finger and sometimes the fourth finger.
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- The major skeletal muscle groups forming the upper body are the abdominal, pectoral, deltoid, trapezius, latissimus dorsi, erector spinae, biceps, and triceps. The major skeletal muscle groups of the lower body are the quadriceps, hamstrings, gastrocnemius, soleus, and gluteus. Muscles move by contracting.
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- Docosapentaenoic Acid is a Dietary Omega-3 Fatty Acid found in Fish Oil with Benefits for Health. Research Review of DPA Uses, Dosages & Side Effects. Docosapentaenoic Acid is a Dietary Omega-3 Fatty Acid found in Fish Oil with Benefits for Health.
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The Median Nerve In general, these muscles perform pronation of the forearm, flexion of the wrist and flexion of the digits of the hand. The median nerve innervates some of the muscles in the hand via two branches. The recurrent branch of the median nerve innervates the thenar muscles – muscles associated with movements of the thumb. (The remaining muscles in the anterior forearm and hand are innervated by the ulnar nerve).
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Temporal muscle From Wikipedia, the free encyclopedia. The temporal muscle, also known as the temporalis, is one of the muscles of mastication. It is a broad, fan-shaped muscle on each side of the head that fills the temporal fossa, superior to the zygomatic arch so it covers much of the temporal bone.
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- (physiology) a muscle that opposes the action of another; the biceps and triceps are antagonistic muscles .A muscle that acts as the opposing force in contraction or relaxing of a muscle. An example of this is the the contraction of the biceps, where the triceps would be the antagonistic muscles.
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- Muscles of the thigh Sartorius“Tailor's muscle”: longest muscle in bodyExtends from the ilium to the medial body of the tibiaFlexes leg, flexes thigh and laterally rotates the thighas in crossing legs Sartorius.
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Rhomboid major muscle Rhomboid major muscle. The rhomboid major is a skeletal muscle on the back that connects the scapula with the vertebrae of the spinal column. In human anatomy, it acts together with the rhomboid minor to keep the scapula pressed against thoracic wall and to retract the scapula toward the vertebral column. Contents.
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Temporal muscle Anatomy and supply. The temporal muscle, also know as the temporalis, is a flat, fan-shaped muscle of mastication on the lateral side of the skull. Due to its size it can be palpated without difficulty, especially when the patient opens and closes his mouth alternately.t arises from the temporal fossa, a large depression on the side of the skull, and the temporal fascia which completely covers the surface of the muscle. From there, the muscle descends through the gap between the zygomatic arch and the skull, forms a thick tendon and inserts at the coronoid process of mandible.
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What Are Longitudes and Latitudes? The Earth is (almost, but not quite) a sphere that rotates around its axis. If we draw a line passing through the center of the Earth along its rotational axis, the line would pass through the North and the South Pole. The Equator is an imaginary line perpendicular to this axis.It is equidistant from the two poles, and divides the globe into the Northern Hemisphere and the Southern Hemisphere.n addition to the Equator, there are four other major latitudes that are usually found on maps and globes. The Arctic Circle is the latitude 66° 32′ North. All locations falling North of this latitude are said to be in the Arctic Circle.
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Anatomy, Muscles, origin and insertion Moveable bone that is point of attachment for muscle. (may become origin point depending on action) Antagonistic muscles. One muscle flexes, pulls, a body part into a position, an antagonistic muscle flexes, pulls, to return the body part to it's original position. ex: Biceps brachii raises arm, Triceps brachii lowers arm.
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- Relating to the coracoid process of the scapula and the arm. See also: coracobrachialis muscle, coracobrachial bursa. [kôr′əkōbrā′kē·al′is] a muscle with its origin on the scapula and its insertion on the inner side of the humerus. It functions to adduct and flex the arm. Coracobrachialis muscle.
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Teres major Teres major. The teres major muscle is one of the six muscles within the scapulohumeral muscle group. The muscle is located on the underside of the upper arm, in the area between the shoulder and elbow.It has a flat shape and is supplied with nerves from the lower subscapular nerve.eres major. The teres major muscle is one of the six muscles within the scapulohumeral muscle group. The muscle is located on the underside of the upper arm, in the area between the shoulder and elbow.
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triceps brachii triceps brachii. The muscle of the posterior arm with three points of origin (one on the scapula, two on the humerus) and one insertion on the ulna. It extends the forearm and is controlled by the radial nerve. See: arm for illus.
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- The latissimus dorsi is the widest muscle in the human body. In fact, the English translation of latissimus dorsi is wide back.. The latissimus dorsi, or lats, are fanlike muscles that begin at the spine, run from the thoracic vertebrae to the sacrum, and attach on the upper arm.he latissimus dorsi is the widest muscle in the human body. In fact, the English translation of latissimus dorsi is wide back.. The latissimus dorsi, or lats, are fanlike muscles that begin at the spine, run from the thoracic vertebrae to the sacrum, and attach on the upper arm.
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- Definition of SARTORIUS. : a muscle that crosses the front of the thigh obliquely, assists in rotating the leg to the cross-legged position in which the knees are spread wide apart, and in humans is the longest muscle.ADVERTISEMENT.efinition of SARTORIUS. : a muscle that crosses the front of the thigh obliquely, assists in rotating the leg to the cross-legged position in which the knees are spread wide apart, and in humans is the longest muscle. ADVERTISEMENT.
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Shoulder Anatomy 1 Back (posterior) muscles of the shoulder: 2  The levator scapulae muscle originates from the transverse processes of the cervical vertebra and descends to attach to the superior (uppermost) and medial (near the midline) corner of the scapula. 3  This muscle elevates the scapula. These muscles retract and elevate the scapula. 2  Teres major muscle originates from posterior surface of the inferior angle of the scapula and attaches the medial lip of the intertubercular sulcus which lies on the anterior surface of the humerus. 3  This muscle extends and medially rotates the humerus.
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Sartorius muscle The sartorius muscle (/sɑrˈtɔəri.əs/) – the longest muscle in the human body – is a long thin superficial muscle that runs down the length of the thigh in the anterior compartment.
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- Learn More in these related articles: sartorius muscle. (from the Latin sartor, “mender”), long, narrow, ribbonlike thigh muscle beginning at the front of the crest of the pelvic girdle, extending obliquely down the front and side of... Any muscle with three heads, or points of origin, particularly the large extensor along the back of the upper arm in humans.